The Pope-Riddle family photographs collection represents a variety of photographic formats. They depict Pope and Riddle family members, particularly members of Ada Brooks Pope's family, friends and business associates of Alfred Pope, local and international friends of Theodate Pope Riddle and scenes of her 1910-1915 travels to Europe and England. Images of architecture viewed during Theodate's travels as well as of Hill-Stead 1902-1930 are well-represented. A number of photographs, primarily stereographs, were taken by Theodate Pope Riddle. The collection also includes photographs by Gertrude Käsebier and Karl Klauser.